71181340492928 has 16 divisors (see below), whose sum is σ = 141806576763510. Its totient is φ = 35590670246400.

The previous prime is 71181340492907. The next prime is 71181340492963. The reversal of 71181340492928 is 82929404318117.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 66640315875904 + 4541024617024 = 8163352^2 + 2130968^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278052111173 + ... + 278052111428.

Almost surely, 2^{71181340492928} is an apocalyptic number.

It is an amenable number.

71181340492928 is a deficient number, since it is larger than the sum of its proper divisors (70625236270582).

71181340492928 is an equidigital number, since it uses as much as digits as its factorization.

71181340492928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556104222615 (or 556104222603 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 59.

The spelling of 71181340492928 in words is "seventy-one trillion, one hundred eighty-one billion, three hundred forty million, four hundred ninety-two thousand, nine hundred twenty-eight".